gollings



(No Model.) 3 Sheets--Sheet l'. E. H. GOLLINGS. ROTARY PUMP.

`Patented Mar. 17,189L

(No Model.) 3V Sheets-Sheet 2.

E. H. GOLLINGS. ROTARY PUMP.

No. 448,518. Patented M211'.` 17, 18191.

(No Model.)

' 3 She-sets-Sheef 3. E. H. GOLLINGS.

ROTARY PUMP.

www M me onlus Pen-:ns ca., mow-una, wnsumm'un, n. c.

tIEuTE `STATES PATENT EEICE.. i

ELLICK I-I. GOLLINGS, OF CHICAGO, ILLINOIS, ASSIGNOR 'lO 'lI-IE GOLLINGSBI-CENTRIC PUMP COMPANY, OF SAME PIrACE.

ROTARY PU NI P.

SPECIFICATION forming part of Letters Patent No. 448,518, dated March17, 1891.

Application nea May 31.1890. serinrasaese. cromati To @ZZ whom it mayconcern: M

Be it known that I, ELLICK H. GoLLINes, of Chicago, in the county ofCook and State of Illinois, haveinvented certain new and usefulImprovements in Rotary Pumps; and I do hereby declare that the followingis a full, clear, and exact description thereof, reference being had tothe accompanying drawings, and to the letters of reference makedthereon, which form a part of this specification.

This invention has for an object to provide an improved construction inrotary pumps.

In certain prior applications for patents filed by me-towit, Serial Nos.30 l ,675, 315,250, 333,766, and 333,767-I have described rotary pumpsin each of which is employed a nonrotating shaft having an eccentricportion, a rotating shell mounted on the concentric por tion of saidshaft, and a chambered or winged wheel within the shell and mounted onthe eccentric portion of the shaft, the shell and wheel rotatingtogether by force applied to the shell and operating upon the wheelthrough suitable engagement of the shell with the wheel, and the 'fluidto be pumped entering and emerging through the non rotating shaft, whichis made hollow for that purpose.

In the present construction the shell is made stationary or non-rotativeand the shaft rotates. The chambered or winged wheel is mounted on theeccentric portion of said shaft and by engagement with the shell is heldfrom rotation, so that it only gyrates within the latter as the shaftturns.

In all of those constructions set forth in said prior applications andin that herein set forth there is a diametrical division of the spacebetween the shell and the eccentricallymounted wheel therein, and theinlet and outlet passages communicate with the several divisions of saidspace. In said constructions described in the prior applications thisline of division is substantially perinanent--as, for example, eithervertical or horizontal. In the present construction, wherein the shaftrotates, the line or plane of division referred to revolves on the axisof the rotating shaft, and in order that the inlet and outlet may be inconstant communication with these several divisions, one with one andthe other with the other, the inlet and outlet ports are also made torevolve.

Describing the invention by reference to the accompanying drawings, Ipoint out that the apparatus is shown with its axis horizontal, butstate that it may he arranged with a vertical axis, if desired.

Figure l is a vertical longitudinal section in the line 1 l of Fig. 3,the eccentric-shaft and the anti-friction bearing-rollersI being shownin side view. Fig. 2 is a horizontal section in the line 2 2 of Fig. 3,the anti-friction rollers of the shaft and the sprocket-wheel applied tothe shaft being shown in full view, excepting that a portion of theshaft is broken away at its front end to illustrate its attachments withthe casting which contains the inlet and outlet ports or passages. Fig.8 is a transverse vertical section in the line 3 3 of Fig. 2. Fig. 4E isa transverse vertical section in the line 4 4 of Fig. 2, and Fig. 5 is aperspective of one of the gates employed. in theV shell for engagementand cooperation with the ehambered wheel.

A represents a fratrie having the uprights A and A2 at its oppositeends.

B is a non-rotating shell secured to said uprights and composed, as hereillustrated, of castings B and B2, constructed to form a cylind ricalpump-chamber h, an induction-chainber h', and passages b2, separated bya radial partition b3 and giving communication between the chambers l)and h'. Theinductionchamber b communicates with a source of supply ofthe liquid to be pumped, as indicated in Fig. l, wherein B3 representsthe opening of a suction or inlet pipe. Through the induction-chamberbpasses the rotating port-casting Bt.

A3 is an outlet or delivery pipe arranged in continuation of the openingaand bolted to the upright A2.

C is a rotating shaft having an eccentric por tion C,separated byacollar c from the concen tric portions of the shaft, and D is a wingedwheel mounted loosely on the eccentric C and occupying and gyratingwithin the chamber I). The shaft C rests in bearings 111195,

anti-friction rollers c surround the shaft in IOO said bearings. Betweenthe hub ot the wheel D and the eccentric (1 are also shown antit'rictionrollers c?.

The wheel D is engaged with the shell l in such manner that its rotationis prevented p and that it is caused to gyrate within the chamber b bythe rotation ot` the shaft. C C', and means are provided by which thespace between the wheel I) and its surrounding shell is diametricallydivided into two chambers, one of which is the suction and the other theexpulsion chamber ot the pump. Said wheel l) and the devices for thusdividing the space between it and the shell may be of variousconstructions. For example, the wheel and its connections with the shellmay be like those set forth in some ol` the aforesaid prior applicationsfor patent or like those pointed out in the application for patent tiledsimultaneously herewith and bearing the serial number 351,690. As adesirable construction, however, I here illustrate the wheel D as havingradial wings d d, at the outer ends ot which are flanges d', projectinglaterally therefrom.

For the purpose of closing the space between the inner wall ot' thechamber h and that one of the wings which is opposite the wing that isfor the time in contact with the shell, a series of gates are providedcorresponding in number with the wings d d. Said gates are shown at E E,and in adaptation to the horizontal arrangement of the axis ofthe pumpthey are pivoted in the lateral and parallel walls of the shell l. Oneot said gates is shown detached and in perspectlve in Fig. 5, from whichfigure it will be seen that it has gudgeons e c at its opposite ends,which, as 'indicated by dotted lilies in Fig. l, enter sockets in theside walls ot the shell.

The sectional form of each of the gates E F. is indicated by full anddotted lines in Fig. 3, wherein it will be seen that at the inner marginof each gate there is a surface c', which is inclined tothe generalsurface ot' the gate, so as to bear squarely and closely against theinner sui-tace of the flange d of one of the wheels wings d when thelatter is in its most retracted position with respec to the surroundingshell. Each of said gates E is also shown provided with an arm c2, whichis illustrated in the form ot` a web and located at one end ot' thegate. This arm projects into the space between two adjacent wings (l ofthe wheel and is of suitable width to come into successive contact withboth of said wings at the proper times to secure the vibration of thegate into and out of contact with the shell. Thetinal closure ofthe gateagainst the shell is, however, effected by the bearing of thehook-t`ormed [lange d ot' a wing most remote from the sli/ell againstthe surface e of the adjacent gate E, as seen at the left in Fig. 3, or,in otlieirfwoitls, in the plane of the eccentric C and diametricallyopposite the wing d, which is borne by said eccentric into directcontact with the shell. This produces the desired division ot' thegeneral space between the shell and its contained wheel into twochambers, and the line of division sweeps about the axis ot' the shaft Cand is always substantially in the plane passing through the axes of theconcentric and eccentric portions ot` said shaft. One of these twochambers is the inlet and the other the outlet chamber of the pump, or,in other words, one is the suction side and the other the expulsion sideofthe pump. To give communication of the inlet and outlet with these twoseveral chambers of the pump, the portion I3 of the shell adjacent tothe chamber Z1, which contains the gyrating wheel, is divided radiallyby partitions h3, giving passages ZF, the partitions b3 corresponding innumber with the wings d of the wheel D, and the passages h2 thereforecorresponding in number with the spaces between said wings d. rlhepartitions D are arranged to coincide with those opposite wings d of thewheel D which are in the plane of the eccentric, so that the division ofthe space between the shell and the wheel l) is extended to the chamberot` the shell which contains the partitions h3, and said division variesits position in the latter as in the former upon the rotation of theshaft C.

To provide inlet and outlet ports which shall follow the revolvingsuction and expulsion chambers ot the pump in their revolution, thecasting B1 is provided and titted to rotate within the induction-chamberb of the shell and between the outer edges of the non-revolvingpartitions b3 and the non-rotating head A2. As a means for rotating thecasting B4, it is provided with a socket b, which tits over the adjacentend of the shaft C, and a pin ZF passes through the walls ot the socketD and through a transverse slot ci in the end ot the shaft C. Thecasting BL has a wall bs extending diametrically across its inner openend and arranged at its inner edge or face in the plane, ot' thedivision of the space within the chamber l) of the shell. Said innerface ot the partition b3 1s seen in Figs. 3 and et partly in full andpartly in dotted lines, where it will be noticed that it is of suchwidth as to pass into apposition with one ot' the partitions b3 beforeit leaves contact with another. 2y this means the division of thechamber l) is continued through the passages b2 and through the rotatingcasting 134. At the side of the partition or wall o* of said casting BLcorresponding with the suction-compartment of the pumpchamber b anopening is provided in said casting B1, giving communication between theinterior ot' the induction-chamber b and the'spaces b2 between thepartitions b2, as indicated in the lower part of said casting in Fig. l.The suction-pipe B3 therefore communicates with and supplies theappropriate or suction chamber of the pump. On the opposite side of thewall b3 the passage ot' the casting B4 communicates with the opening dand the delivery-pipe A3, as seen in the upper portion of said castingin said Fig. l.

IIO

The casting Bu1 is shown in double conical forni With its larger endtoward the pumpchamber and as having bearing at its extreme inner endagainst an annular seat h, formed therefor upon the non-rotating portionof the shell B', and at its opposite end against the adjacent upright A2about the opening a, as clearly seen in Figs. l and 2.

F is a ring fitted to the outer conical sur face of the casting B andscrewed into the shell, as shown in said Figs. l'and 2, for the purposeof centering and holding the casting B*l in place at its inner end. F isa similar ring fitted to the outer conical end of saidV casting andscrewed to the upright A2 for the proper bearing-support of the outerend of said casting. The joints between the rings F and F and thesurfaces of the casting B4, upon which they bear, should besubstantially water-tight, andas these rings bear upon conical surfacesof said casting they may be adj Listed to any degree of closeness ofbearing thereon by their screw-threaded connection with the shell andhead or upright.

In Fig. 2,f represents a set screw threaded through the shell intocontact with a flange f on the ring F to retain the latter in theposition given it, and f2 is a similar set-screw threaded through theflange on the ring F into bearing against the head A2 to similarlyretain the latter ring from movement after` it has been properlyadjusted.

In the construction herein described, wherein the shell does not rotateand in which the eccentrically-mou nted Wheel D merely gyrates withinthe shell B, provision is found to be necessary for the discharge of airfrom the chamber b, especially in starting the pump, but desirably toprevent the accumulation of air within said chamber of the shell at anytime. For this purpose an automatic airvalve is herein shown at G inFigs. l and Said valve, as here illustrated, consists of a bell g,communicating with the top of the chamber b by a passage g andcontaining a loose rubber or other ball g2. The bell g is provided witha nozzle g3, which is closed or opened at pleasure by a plug-cock gt.Thenl the cock g4 is opened, air within the expulsion side of thechamber ZJ, finding its way to the top of said chamber past the openingand closing gates E E, will lift the ball g2 and have its escape throughthe nozzle g3. After the air has been exhausted upon starting the pumpthe cock (fl will be closed and will be opened again only when the pumpis to be again started or when the stream thrown by the pump indicatesthe accumulation of air within the latter.

One object of providing` the gates E with the arms @2, as shown, and bywhich they are opened by the iianges d of the gyrating wheel, is to givefree passage for air from the lower part to the upper part of thechamber l). If it were not for the desire to provide :for such rise ofthe air within the pump, said gates E might remain in constant bearingagainst the periphery of the chamber l). The gates serve to retain thewheel D, which is loose upon the eccentric, in its proper position withrespect to the shell and to themselves, being the'means by which therotation of the said wheel is prevented and its gyration secured. Thebearing of the wheel-Wings against the gates for this purpose is in aplane transverse to the divisional plane of the pump, as indicated bythe several contacts shown in Fig. 3.

In another application for patent lfiled simultaneously herewith, SerialNo. 353,690, I have set forth another form of gate cooperating with agyrating wheel having straight wings within a non-rotating shell. Theremaining features are the same as here shown, and the claims for suchother features hereto appended are not to be regarded as restricted tothe particular form of the wheel and ad junctive devices as illustratedherein.

It is frequently desirable to reverse the direction of flow of water orother liquid through a pump, or, in other words, to transpose the pointsof induction and discharge. In the construction here shown this will beeffected by merely turning the casting B4 upside down. The pipe A3 willthen be the suction and the passage B3 the discharge.

I claim as my inventionl. In an apparatus of the general characterdescribed, the combination, with a non-rotat ing shell having a seriesof passages b2, giving communication between chambers l? and b', of arotating shaft axial to the shell and having an eccentric portion withinthe chamber b, a non-rotating Winged wheel occupying the chamber l) ofthe shell and mounted loosely on the eccentric portion of said shaft,rotation of said wheel being prevented by en gagement thereof with theshell, and a rotating member having a port or passage in communicationwith a part only of the passages h2 and leading through the chamber b.

2. In a rotary pump, a non-rotating shell having a chamber l) and achamber 1) communicating with each other through a series of passagesseparated by radial partitions, a rotating shaft C, having an eccentricportion C', awingcd non-rotating wheel mounted loosely on said eccentricportion of the shaft and within the chamber li of the shell, means forconnecting the wings of the said wheel with the shell, wherebythe spacebetween the shell and the wheel is diametrically divided into suctionand expulsion chambers, and a rotating member B4, constructed andarranged to afford an outlet-passage from the expulsion side of thepump-chamber and an inlet-passage from the chamber b to the suction sideof the pump-chamber, substantially as described.

3. In combination with a non-rotating shell, a horizontal. rotatingshaft having an eccentric portion, a Winged wheel D, mounted on saideccentric portion of the shaft, a series of gates pivoted to the shelland engaged by the IIO IZO

wings of the wheel, and an air-Valve in the upper part ot' the shell.

l. The Shell l, containing the ehambeiI I; and provided with a Seriesol' radial partitions l1* and with a central Shaft-bearing` Il",supported by the partition Il, combined with the rotating.;` shaftresting in said bearing Ir and haring` an eccentric portion C', and awinged wheel mounted on said eccentric portion ofthe slialt and engagedwith the shell.

5. In the pump substantially as described, thc combination, with thenon-rotating` shell, the rotating shaft having an eccentric port tion,and the gyrating Wheel mounted on said I scribed.

In testimon)v that l claim the foregoing` as my invention l atlix mySignature in presence of two witnessca.

ELLCK Il. GOLLINGS. XVitnesses: l

M. E. DArToN, (t CLARENCE looLn.

located l eccentric portion of the shaft, ot the conical x5 l rotating'partl l, constructed to afford outlet

